On 05/01/2015 12:37 PM, Ingo Molnar wrote:
> Also note that this bit in context_tracking_enter():
>
> if (state == CONTEXT_USER) {
> trace_user_enter(0);
> vtime_user_enter(current);
> }
>
>
> is related to precise time measurement of user/kernel execution times,
> it's not needed by the scheduler at all, it's just exported to
> tooling. It's not fundamental to the scheduler.
Any objections to the idea from the other thread to simply keep
the time accumulating in buffers in local_clock() units, and
only update the task vtime once a second or so?
--
All rights reversed
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
